Advertisement
TYPE
1A2
CONTROLS
AND
CONNECTORS
The
following
are
duplicated
in Channel
1 and
2,
and
operate
independently:
1.
VOLTS/CM:
A 9 position
switch
that
selects
the
cal-
ibrated
input
sensitivities.
Range
is
from
50
mv/cm
to 20 v/cm.
2.
VARIABLE
VOLTS/CM;
Capable
of
reducing
selected
calibrated
sensitivities
by a factor
of
at
least
2.5:1.
3.
INPUT
COUPLING:
Selects
AC
or
DC
coupling
to
the
input
of
the
preamplifier.
In
the
GND
position,
the
input
is
disconnected
from
the
circuit
under
test
and
the
input
of
the
preamplifier
is
grounded.
4.
POSITION:
Positions
the
trace
vertically
on the CRT.
In
the ADD
mode,
only
the
Channel
1 POSITION
control
operates.
5.
PULL
TO
INVERT:
This
control
provides
polarity
in-
version
of
the
display.
6.
VAR ATTEN
BAL
(screwdriver
adjustment):
A DC balance
control
which
is
adjusted
so
there
is no
trace
shift
as
the
VARIABLE
VOLTS/CM
control
is
rotated
full
CW and
CCW.
7.
GAIN
(screwdriver
adjustment): ° With
a known
input
signal
(such
as
the calibrator),
the oscilloscope
can
be
adjusted
to
the
calibrated
sensitivity.
The
MODE
switch
has
five
positions
and
affects
both
channels.
1.
ALT:
Each
channel
is
displayed
on
alternate
sweeps
of
the
time
base.
With
a 547
set
for
alternate
time
base
switching,
channel
1 can
be
slaved
to A time
base
and
Channel
2 to
B time
base.
2.
CH
1:
Channel
1 only
is
displayed.
Advertisement
Need help?
Do you have a question about the 1A2 and is the answer not in the manual?
Questions and answers